I have a good bit experience with LMS and their tuning. My last car was a 14 Chevy SS sedan with a 6.2l
I got their tune and went to NJ for a dyno run, numbers were crap, thought my car was broken.
Finished working Friday night, got into car and went New York to Michigan. Arrived sat morning, they put me on their Dyno, 4 pulls back to back at their cost and the car was right where they said it would be.
Bought an intake, 4 more pulls. Compared Dyno sheet to a random customer from another year, 1:1 same numbers.
I trust the LMS Dyno.
As far as your dyno numbers, they seem low.
Even if LMS Dyno was bad, my personal track numbers tell a different story.
Just look in my signature and tell me this thing is not making over 100hp over stock.
Something is fishy somewhere. I have my $ on LMS who share their Dyno with Ford of all people.